Alot of what Philly does right now will depend on Andre Miller. If you watch his career closely you notice that when he is surrounded with talent, something happens to his game and he actually becomes a worst player. He was an average point guard when he and Elton Brand played the first time with eachother in Los Angeles (and you see how well that worked) and he was an average player in Denver. Andre always plays better or his game looks better when the offence in a weird way is focussed around him.
Plus, an achilles injury is a severe injury and I wouldn't be surprised to see Brand play pretty poorly (by his standards) this season.
Philly is good but I see them as a 43-44 win team this season. Good but not great.